Factors / Factors of 438

Factors of 438

1, 2, 3, 6, 73, 146, 219, 438

438 breaks into 4 pairs, tested up to √438 ≈ 20.9; each pair multiplies back to 438 exactly. 438's full pair list is (1, 438), (2, 219), (3, 146), (6, 73), for 8 divisors in total. 438's divisors other than 438 itself sum to 450, 12 above 438: abundant. 438 is even, digit sum 15 for 438; small divisors of 438 include 2, 3, 6. 438 has 8 divisors; 437 has 4 and 439 has 2, so 438 wins here. 438 divided by its largest divisor, 219, gives 2.